Earth's Layers Flashcard

Front

What is the temperature range of the mantle?

Back

2,800 to 3,200 °C

Front

What do geologists call the crust and uppermost mantle?

Back

Lithosphere

Front

What elements primarily make up the crust?

Back

Oxygen and Silicon

Front

How thick is the crust?

Back

8 to 40 kilometers

Front

Which layer of Earth is solid and mostly composed of iron?

Back

The Inner Core

Front

What is the outermost layer of the Earth called?

Back

The Crust

Front

What is the layer beneath the crust called?

Back

The Mantle

Front

What is the state of matter of the outer core?

Back

Liquid

Front

What is the primary component of the inner core?

Back

Iron

Front

What is the asthenosphere?

Back

A semi-fluid layer of the mantle beneath the lithosphere.